Quiz Discussion

The _______operation performs a set union of two “similarly structured” tables

Course Name: SQL -Structured Query Language

  • 1]

    Union

  • 2]

    Join

  • 3]

    Product

  • 4]

    Intersect

Solution
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# Quiz
1
Discuss

The result which the operation contains all pairs of tuples from the two relations, regardless of whether their attribute values match.

  • 1]

    Join

  • 2]

    Cartesian product

  • 3]

    Intersection

  • 4]

    Set difference

Solution
2
Discuss

A domain is atomic if elements of the domain are considered to be ____________ units.

  • 1]

    Different

  • 2]

    Indivisbile

  • 3]

    Constant

  • 4]

    Divisible

Solution
3
Discuss

The term _______ is used to refer to a row.

  • 1]

    Attribute

  • 2]

    Tuple

  • 3]

    Field

  • 4]

    Instance

Solution
4
Discuss

A ________ in a table represents a relationship among a set of values.

  • 1]

    Column

  • 2]

    Key

  • 3]

    Row

  • 4]

    Entry

Solution
5
Discuss

The tuples of the relations can be of ________ order.

  • 1]

    Any

  • 2]

    Same

  • 3]

    Sorted

  • 4]

    Constant

Solution
6
Discuss

The term attribute refers to a ___________ of a table.

  • 1]

    Record

  • 2]

    Column

  • 3]

    Tuple

  • 4]

    Key

Solution
7
Discuss

Using which language can a user request information from a database?

  • 1]

    Query

  • 2]

    Relational

  • 3]

    Structural

  • 4]

    Compiler

Solution
8
Discuss

’_____’ matches any string of ______ three characters. ’_____%’ matches any string of at ______ three characters.

  • 1]

    Atleast, Exactly

  • 2]

    Exactly, Atleast

  • 3]

    Atleast, All

  • 4]

    All, Exactly

Solution
9
Discuss

Database __________ which is the logical design of the database, and the database _______ which is a snapshot of the data in the database at a given instant in time.

  • 1]

    Instance, Schema

  • 2]

    Relation, Schema

  • 3]

    Relation, Domain

  • 4]

    Schema, Instance

Solution
10
Discuss

For each attribute of a relation, there is a set of permitted values, called the ________ of that attribute.

  • 1]

    Domain

  • 2]

    Relation

  • 3]

    Set

  • 4]

    Schema

Solution
# Quiz